package com.example.demo.customer;

import com.example.demo.exception.NotFoundException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;



@Service
public class CustomerService {
    private  final  static Logger LOGGER = LoggerFactory.getLogger(CustomerService.class);

private final CustomerRepository customerRepository;


   @Autowired
    public CustomerService (CustomerRepository customerRepository) {
        this.customerRepository=customerRepository;
    }

    List<Customer> getCustomers(){
       LOGGER.info("getCustomers called");
        return customerRepository.findAll();

    }
    Customer getCustomer(Long id){
          return customerRepository
            .findById(id)
                .orElseThrow(() -> {
                   NotFoundException notFoundException= new NotFoundException("customer "+id+"无法找到");
                   LOGGER.error("error: getCustomer {}"+id,notFoundException);
                   return notFoundException;
                });

}


}